Home / 2,920.80-4,030.53-1,661.67

Finding the Fourth Proportional to 2,920.80, 4,030.53 and 1,661.67

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Solution

The fourth proportional to 2,920.80, 4,030.53 and 1,661.67 is: 2,293.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.80 : 4,030.53 = 1,661.67 : x
  2. Step 2: Convert to fraction form
    2,920.80/4,030.53 = 1,661.67/x
  3. Step 3: Cross multiply
    2,920.80x = 4,030.53 × 1,661.67
  4. Step 4: Simplify right side
    2,920.80x = 6,697,410.79
  5. Step 5: Solve for x
    x = 6,697,410.79/2,920.80
  6. Step 6: Final answer
    x = 2,293.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.